I have (had) a Titan DIOX370 on my 8. Great engine and ran trouble free for 5 years/ 950ish hours. Started burning oil like crazy but everything else was right where it should be. Good compression, clean pipes and plugs but dirty oil and using a quart about every 3 hours like a switch was flipped. Found a collapsed breather hose, replace and thought I was good to go and lucky that the crank seal stayed in. Talked to engine shop and thought I had glazed cylinders or just broke a ring or any other myriad of things that can go south in a cylinder, so off to JB's for a top inspection and top overhaul as required.
They pulled a cylinder and found this..
you can see how the lifter is just coming apart and the scored crank in the background. This is lifter part number 7287R and it seems these came from a batch in late 2012ish that may have been produced with improper hardening done.
and this. You can see how the cam lobe is chewed up also.
and this. Another view of the top of the lifter. You can see how clean the inside of the engine was.
It has been five years and 950ish hours since new. I have never gone more than 2 weeks between flying, usually much more frequently than that, changed oil and filters religiously every 50 hours at most, sometimes at closer intervals and used CAM GUARD for the past 3 years since I got out of flying shows very, very regularly.
I'm posting this just as a heads up that if you have an engine from this time frame, really watch those filters at oil changes. Mine went from clean to full of very, very fine black dust that was not visible, but a magnet picked it up after the filter was washed and dried. This happened very fast once the metal started circulating around.
This is not meant to be any kind of negative thread, just a heads up and a reminder to really, really check those filters when changing the oil. There were warning signs to me in the oil consumption and I just happened to have the filter laying in the trash from the change preceding this one and after I washed the mesh and ran a magnet over it I found a little of the ferris metal there. I'm sure going forward I will be much more diligent when inspecting used filters. Absolutely nothing visible, but the old magnet found it. If your engine was produced in this time frame, I would keep an eye out.
New Superior engine is already built and almost ready for installation.
They pulled a cylinder and found this..
you can see how the lifter is just coming apart and the scored crank in the background. This is lifter part number 7287R and it seems these came from a batch in late 2012ish that may have been produced with improper hardening done.
and this. You can see how the cam lobe is chewed up also.
and this. Another view of the top of the lifter. You can see how clean the inside of the engine was.
It has been five years and 950ish hours since new. I have never gone more than 2 weeks between flying, usually much more frequently than that, changed oil and filters religiously every 50 hours at most, sometimes at closer intervals and used CAM GUARD for the past 3 years since I got out of flying shows very, very regularly.
I'm posting this just as a heads up that if you have an engine from this time frame, really watch those filters at oil changes. Mine went from clean to full of very, very fine black dust that was not visible, but a magnet picked it up after the filter was washed and dried. This happened very fast once the metal started circulating around.
This is not meant to be any kind of negative thread, just a heads up and a reminder to really, really check those filters when changing the oil. There were warning signs to me in the oil consumption and I just happened to have the filter laying in the trash from the change preceding this one and after I washed the mesh and ran a magnet over it I found a little of the ferris metal there. I'm sure going forward I will be much more diligent when inspecting used filters. Absolutely nothing visible, but the old magnet found it. If your engine was produced in this time frame, I would keep an eye out.
New Superior engine is already built and almost ready for installation.
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